PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-04:27:50
G01     69.1           32.6                5.1 +/-    0.73       8.5 +/-    0.73  0.050 / 0.110
G07     138.0          27.3                7.3 +/-    1.06      13.5 +/-    1.06  0.050 / 0.120
G11     51.6           28.5                2.4 +/-    1.13       4.4 +/-    1.13  0.040 / 0.070
G13     272.1          37.8                6.3 +/-    1.57       9.6 +/-    1.57  0.060 / 0.060
G15     302.3          14.9                0.4 +/-    1.40       1.1 +/-    1.40  0.130 / 0.470
G17     237.4          73.3                7.2 +/-    0.68       7.4 +/-    0.68  0.150 / 0.380
G18     45.3           15.0                1.8 +/-    3.10       4.4 +/-    3.10  0.050 / 0.120
G19     224.7          41.3                6.3 +/-    1.52       9.0 +/-    1.52  0.090 / 0.100
G28     17.6           59.8                4.3 +/-    0.52       4.9 +/-    0.52  0.030 / 0.040
G30     137.2          61.9                7.3 +/-    0.67       8.1 +/-    0.67  0.030 / 0.030